Add benchmark output to compiler stats.

runtime/vm/isolate.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/isolate.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/json.h"
 #include "vm/code_observers.h"
@@ skipping 824 matching lines @@
 
   result->BuildName(name_prefix);
   result->debugger_ = new Debugger();
   result->debugger_->Initialize(result);
   if (FLAG_trace_isolates) {
     if (name_prefix == NULL || strcmp(name_prefix, "vm-isolate") != 0) {
       OS::Print("[+] Starting isolate:\n"
                 "\tisolate:    %s\n", result->name());
     }
   }
-  if (FLAG_compiler_stats) {
-    result->compiler_stats_ = new CompilerStats(result);
+
+  result->compiler_stats_ = new CompilerStats(result);
+  if (FLAG_compiler_benchmark) {
+    result->compiler_stats_->EnableBenchmark();
   }
+
   ObjectIdRing::Init(result);
   // Add to isolate list.
   AddIsolateTolist(result);
 
   return result;
 }
 
 
 void Isolate::InitializeStackLimit() {
   SetStackLimitFromStackBase(Isolate::GetCurrentStackPointer());
@@ skipping 641 matching lines @@
   }
 
   // Then, proceed with low-level teardown.
   {
     // Ensure we have a zone and handle scope so that we can call VM functions,
     // but we no longer allocate new heap objects.
     StackZone stack_zone(thread);
     HandleScope handle_scope(thread);
     NoSafepointScope no_safepoint_scope;
 
-    if (compiler_stats_ != NULL) {
+    if (FLAG_compiler_stats) {
       OS::Print("%s", compiler_stats()->PrintToZone());
     }
 
     // Notify exit listeners that this isolate is shutting down.
     if (object_store() != NULL) {
       NotifyExitListeners();
     }
 
     // Clean up debugger resources.
     debugger()->Shutdown();
@@ skipping 829 matching lines @@
                            serialized_message_, serialized_message_len_);
 }
 
 
 void IsolateSpawnState::Cleanup() {
   SwitchIsolateScope switch_scope(I);
   Dart::ShutdownIsolate();
 }
 
 }  // namespace dart